1. American Academy on Pediatric Dentistry: Policy on Early Childhood Caries (ECC): Classifications, Consequences and Preventive. Pediatr Dent. 2008–2009, 30 (7 Suppl): 40-43.
2. Bagramian RA, Garcia-Godoy F, Volpe AR: The global increase in dental caries. A pending public health crisis. Am J Dent. 2009, 22 (1): 3-8.
3. Li Y, Zhang Y, Yang R, Zhang Q, Zou J, Kang D: Associations of social and behavioural factors with early childhood caries in Xiamen city in China. Int J Paediatr Dent. 2011, 21 (2): 103-111. 10.1111/j.1365-263X.2010.01093.x.
4. King NM, Wu II, Tsai JS: Caries prevalence and distribution, and oral health habits of zero- to four-year-old children in Macau, China. J Dent Child (Chic). 2003, 70 (3): 243-246.
5. Gao XL, McGrath C, Lin HC: Oral health status of rural–urban migrant children in South China. Int J Paediatr Den. 2011, 21 (1): 58-67. 10.1111/j.1365-263X.2010.01091.x.